Red Light District - Karyuugai

…When the machiai were removed from the three industries, the area became a two-industry association, and was called a two-industry district. It is used almost synonymously with the red-light district, and was the main entertainment district in the city in the first half of the 20th century. [Yoichi Harashima] …

*Some of the terminology that refers to "Red Light District" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…三業から待合の抜けた所では二業組合となり，そこを二業地という。花柳街とほぼ同義に用い，20世紀前半における市街地の主要な遊興地帯であった。【原島 陽一】。…

※「花柳街」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報